Unreal Engine Issues
Unreal Engine Issues
Motion Matching FPS instability causes jittering when using the root offset node
UE - Characters - Animation - Feb 23, 2026Offset root node is affected by frame rate and produces jitter in it's motion across various settings and styles. ...
[AI] SmartObjectPersistentCollection produces errors during Map Validation
zComponent - Archive - Nov 18, 2025SmartObjectPersistentCollection in 5.6 and later now give errors when the map validator runs due to referencing spatially loaded actors. This was working per licensee in 5.5. There was a change from ...
Anchor text can be scaled via the scale box
UE - Editor - UI Systems - Mar 13, 2017Anchor text can be scaled via the scale box. The scaling for the anchors of widget can be affect if placed in a scale box ...
FSlateApplication::OnControllerButtonPressed/Released removed causing input plugins to no longer work
UE - Editor - UI Systems - Slate - Dec 8, 2014The functions OnControllerButtonPressed/Released using FKey were deleted for 4.6. This leaves plugin authors no way of propagating key presses from their plugin in to the input system. ...
OnRep functions do not fire on the Server when elements are added to an array variable marked as RepNotify
UE - Networking - Mar 17, 2015OnRep functions do not fire on the Server when elements are added to an array variable marked as RepNotify. They do not fire at all when setting an array element with the Set Array Elem node. Proba ...
Cloth meshes in Content Examples spinning incorrectly.
UE - Simulation - Physics - Character - Jan 25, 2017In the Cloth level in Content Examples, the cloth meshes at display 1.6 (Self Collision) are spinning and are being lifted into the air. This isn't consistent with the same assets in //UE4/Main. ...
Exposure Bias in Post Processing is blown out for Samsung Note 5
UE - Platform - Mobile - Apr 6, 2016The post process within the project is causing the light to show up extremely bright on Note 5. This project has been tested on a Nexus 5, Samsung Galaxy S6, and Nexus 5X. Could not repro on: 6713 ...
Local Variable loses value after reference moves file location
UE - Gameplay - Blueprint - May 23, 2017Local Variable loses value after reference moves file locations. This does not just affect construction scripts, following these steps with a function instead produced the same result. This issue do ...
Unable to load ASTC_HDR cube texture on IOS
UE - Rendering - Architecture - RHI - Jul 24, 2023Project include a hdr texture "desert_outer_hdr" Texture size is 512*512*6, compressed with ASTC 6x6 HDR profile Stride should be: ceil(512/6)*16 = 1376 bytes However, if connect to xcode debug, ...
Twinmotion sign-in error when attempting sign-in inside app
TM - Core - May 18, 2026Reported in SF [Link Removed] Attempting to sign into Twinmotion from within the TM 2026.1 editor results in a consistent sign-in error using the sign-in buttons. Initial sign-in during launch whe ...